How long can you have raised inter cranial pressure for before symptoms show ? and what symptoms would you for sure have ? would a neuro exam at the er and a ct scan of the head show indicators ?

Progressive increased intracranial pressure can cause headaches, visual blurring and/or double vision, nausea and/or vomiting, dizziness and/or imbalance, and increasing blood pressure with a declining pulse. Not clear why you think you possess brain pathology. Your choice of whether to go to ER, as not feasible to advise based on your nonspecific post.